ubuntu-man命令退出

ubuntu-man命令退出

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root@ubuntu:~# sudo apt update Get:1 http://mirrors4.tuna.tsinghua.edu.cn/ubuntu-ports jammy InRelease [597 B] Get:2 http://archive.d-robotics.cc/ubuntu-rdk jammy InRelease [581 B] Err:1 http://mirrors4.tuna.tsinghua.edu.cn/ubuntu-ports jammy InRelease Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?) Err:2 http://archive.d-robotics.cc/ubuntu-rdk jammy InRelease Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?) Get:3 http://mirrors4.tuna.tsinghua.edu.cn/ubuntu-ports jammy-security InRelease [613 B] Err:3 http://mirrors4.tuna.tsinghua.edu.cn/ubuntu-ports jammy-security InRelease Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?) Get:4 http://mirrors4.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates InRelease [613 B] Err:4 http://mirrors4.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates InRelease Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?) Get:5 http://mirrors4.tuna.tsinghua.edu.cn/ubuntu-ports jammy-backports InRelease [629 B] Err:5 http://mirrors4.tuna.tsinghua.edu.cn/ubuntu-ports jammy-backports InRelease Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?) Get:6 http://mirrors4.tuna.tsinghua.edu.cn/ros2/ubuntu jammy InRelease [597 B] Err:6 http://mirrors4.tuna.tsinghua.edu.cn/ros2/ubuntu jammy InRelease Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?) Reading package lists... Done N: See apt-secure(8) manpage for repository creation and user configuration details. N: Updating from such a repository can't be done securely, and is therefore disabled by default. E: The repository 'http://mirrors4.tuna.tsinghua.edu.cn/ubuntu-ports jammy InRelease' is not signed. E: Failed to fetch http://mirrors4.tuna.tsinghua.edu.cn/ubuntu-ports/dists/jammy/InRelease Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?) N: See apt-secure(8) manpage for repository creation and user configuration details. N: Updating from such a repository can't be done securely, and is therefore disabled by default. E: The repository 'http://archive.d-robotics.cc/ubuntu-rdk jammy InRelease' is not signed. E: Failed to fetch http://archive.d-robotics.cc/ubuntu-rdk/dists/jammy/InRelease Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?) N: See apt-secure(8) manpage for repository creation and user configuration details. N: Updating from such a repository can't be done securely, and is therefore disabled by default. E: The repository 'http://mirrors4.tuna.tsinghua.edu.cn/ubuntu-ports jammy-security InRelease' is not signed. E: Failed to fetch http://mirrors4.tuna.tsinghua.edu.cn/ubuntu-ports/dists/jammy-security/InRelease Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?) N: See apt-secure(8) manpage for repository creation and user configuration details. N: Updating from such a repository can't be done securely, and is therefore disabled by default. E: The repository 'http://mirrors4.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates InRelease' is not signed. E: Failed to fetch http://mirrors4.tuna.tsinghua.edu.cn/ubuntu-ports/dists/jammy-updates/InRelease Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?) E: Failed to fetch http://mirrors4.tuna.tsinghua.edu.cn/ubuntu-ports/dists/jammy-backports/InRelease Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?) E: The repository 'http://mirrors4.tuna.tsinghua.edu.cn/ubuntu-ports jammy-backports InRelease' is not signed. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: Failed to fetch http://mirrors4.tuna.tsinghua.edu.cn/ros2/ubuntu/dists/jammy/InRelease Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?) E: The repository 'http://mirrors4.tuna.tsinghua.edu.cn/ros2/ubuntu jammy InRelease' is not signed. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. 怎么回事
10-01
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